Impact indicator for golf clubs



March 15, 1938. A M. J. PLESE 2,111,249

IMPACT INDICATOR FOR GOLF CLUBS Filed July 15, 1935 INVENTOR BY Q 2ATTORNEY Patented Mar. 15, 1938 UNITED STATE PATENT OFFIQE IMPACTINDICATOR FOR. GOLF CLUBS Michael J. Plese, Brooklyn, N. Y.

Application July 15, 1935, Serial No. 31,396

3 Claims.

My invention relates to improvements in golf clubs or sticks and moreparticularly has reference to and is illustrated in the accompanyingdrawing in its application to a golf club provided with means in thehead thereof for measuring the impact or blow to determine the distancea ball will travel when struck; the same being especially useful inpractice indoors where the ball can be driven against a net, padding orotherwise.

Referring to said drawing, I have illustrated in Fig. 1 in perspective,parts being broken away, a suitable application of my invention. Fig. 2is a longitudinal sectional view of the same on line 2-2 of Figure 1,Fig. 3 is an enlarged longitudinal section of the indicator and itsmounting. Fig. 4 is a plan view, looking down upon the top of the headof the club. Fig. 5 is a view looking in at thebutton or disk whichreceives the impact of the ball. Fig. 6 is a perspective view of thesame, and Fig. 8 is a view of the outer cylinder or casing within whichthe parts shown in Figs. 5 and 6 slide.

8 indicates the hammer or head of the golf club, and 9 the shank wherethe handle is attached. The club is cut away at the top as indicated atHi, to allow for the movement of the pointer or indicator ll, and I2 isa slide or cover which may be open or provided with a transparency at I3to reveal the scale shown below.

A hole is bored in the head 8 as indicated at I4 to receive the plug 15,which in turn may be secured by the screw IS, the plug having a reducedthreaded portion ll, to receive the threaded outer shell l8 within whichis slideably mounted the button or piston 19, resiliently projected bythe compression spring 20 against the annular flange or stop 2!.

The button or piston portion 19 is provided with a bracket 22, whichmoves therewith in slot [8' to operate the rear end 23 of the pointerll, preferably mounted at 25 as shown to advantage in Figs. 3 and 7. Itwill be seen that the threaded shank 25 is screwed into the head of theclub, after which the pointer H is dropped over the upward extending pin21, around which is secured the compression spring 28, which when thehousing 29 is pressed down, is adapted to receive the nut 30, thuspivotally holding the pointer ll freely to turn thereon.

In swinging the club, the ball may be struck by the button l9 and thespring 20 is compressed, the inward travel of the piston I9 carrying thebracket 22 which strikes the right end 23 of the pointer ll, therebyindicating upon the scale l3 the force of the blow or impact.

The nut 30, shown to advantage in Fig. 3, is 5 turned down sulficientlyso that there is enough friction upon the pointer ii to hold it in theposition to which it is moved by the impact, so as to indicate thereading upon the scale I3 before the nut is released for the next drive.0

Of course, it will be understood that modifications may be made in theconstruction and arrangement of parts without departing from the spiritof the invention, as claimed.

I claim: 15

1. In combination with a golf club, a spring projected piston therein,said piston having means projecting laterally thereof, a pivoted pointerand a scale visible from the outside of said club, said pointer movablein the path of movement of part of said means whereby when a ball isstruck by said piston said pointer is moved by the latter and indicatesthe striking force of the blow.

2. In combination with a golf club, a spring projected piston in thehead of the club, a pivoted pointer and a scale visible from the outsideof the club, lever means connecting said piston with said pivotedpointer to engage the same, said pointer being pivoted so as to engagesaid 30 lever means in" the path of movement thereof and means foradjusting the position of said pointer on said scale, said lever meansbeing disposed so as to permit the pointer to remain in indicatingposition until reset by said adjusting 35 means.

3. In combination with a golf club, a spring projected piston therein,lever means projecting laterally from said piston, a pivoted pointer anda scale visible from the outside of the club, said 40 pointer beingpivoted so as to engage said lever means in the path of movementthereof, and. means for manually adjusting the position of said pointeron said scale, whereby when a ball is struck by said piston, saidpointer is moved by said lever means to indicate the striking force ofthe blow, the pointer remaining in said indicated position untilmanually reset to the initial position.

MICHAEL J. PLEsE.

